CN204041729U - One completely fills radially self-locking roller bearing - Google Patents

Abstract

One completely fills radially self-locking roller bearing, at least comprise bearing outer ring and some cylindrical rollers, the axial left and right both ends of the surface of described bearing outer ring are respectively equipped with the annular rib extended radially inwardly, the internal surface of bearing outer ring forms ring raceway between two annular ribs, the diameter D of the annular rib of described bearing outer ring ₂satisfy condition: OO ＇>=(De-D ₂)/2, wherein, described De is the diameter of the ring raceway of described bearing outer ring, and described OO ＇ is that Z grain cylindrical roller is switched to the outward radial displacement amount at the second state Shi Qi center from the first state; Described Z grain cylindrical roller completely fills radially self-locking in the ring raceway of bearing outer ring.The utility model can make its last cylindrical roller, namely the Z grain cylindrical roller described in such scheme, can directly insert from the end face of bearing, then radial displacement enters in the ring raceway of described bearing outer ring, thus Z grain cylindrical roller is completely filled radially self-locking in the ring raceway of bearing outer ring.

Description

One completely fills radially self-locking roller bearing

Technical field:

The utility model relates to one and completely fills radially self-locking roller bearing.

Background technique:

The assembling completely filling radially self-locking roller bearing is at present larger than the assembling difficulty completely filling radial roller bearing, mainly due to the existence of hold depth, makes last roller when loading, not easily enters raceway.If direct rigid press-in, certainly will destroy the surface quality of this roller and adjacent rollers, therefore usually adopt the method for induction heating outer ring, as shown in Figure 1, after first making outer ring 01 expanded by heating, reinstall last roller 02.But the heating plant of this method, frock more complicated, operation easier are also high, therefore this class bearing only just can manufacture in minority producer with good conditionsi.

Therefore, in order to solve last roller assembling difficulty problem of full dress radially self-locking roller bearing, be necessary to make improvements existing bearing.

Summary of the invention:

The purpose of this utility model is to provide one completely to fill radially self-locking roller bearing, and the structure of this bearing is conducive to making the assembling of its cylindrical roller simpler and easy.

One completely fills radially self-locking roller bearing, at least comprise bearing outer ring and some cylindrical rollers, the axial left and right both ends of the surface of described bearing outer ring are respectively equipped with the annular rib extended radially inwardly, the internal surface of bearing outer ring forms ring raceway between two annular ribs, the diameter D of the annular rib of described bearing outer ring ₂satisfy condition: OO ＇>=(De-D ₂)/2, wherein, described De is the diameter of the ring raceway of described bearing outer ring, described OO ＇ is that Z grain cylindrical roller is switched to the outward radial displacement amount at the second state Shi Qi center from the first state, under described first state, the outer surface of the outer surface of Z grain cylindrical roller and the adjacent the 1st cylindrical roller and Z-1 grain cylindrical roller is simultaneously tangent, and this Z grain cylindrical roller is positioned at the side near described annular rib, now, the center of this Z grain cylindrical roller is O, under described second state, the outer surface of this Z grain cylindrical roller and the internal surface of ring raceway tangent, now, the center of this Z grain cylindrical roller is O ＇, described Z is the roller sum that cylindrical roller completely fills, described Z grain cylindrical roller completely fills radially self-locking in the ring raceway of bearing outer ring.

The full dress radially self-locking roller bearing of the utility model, has following beneficial effect: because of the diameter D of its annular rib ₂satisfy condition: OO ＇>=(De-D ₂)/2, make its last cylindrical roller, namely the Z grain cylindrical roller described in such scheme, can directly insert from the end face of bearing, then radial displacement enters in the ring raceway of described bearing outer ring, thus Z grain cylindrical roller is completely filled radially self-locking in the ring raceway of bearing outer ring, it is without the need to heated mandrel bearing outer-ring, without the need to the heating plant of costliness, operation easier is low, assembles simpler and easy.

The full dress radially self-locking roller bearing of the utility model, improves by following scheme:

Described OO ＇ draws by such as under type:

${\mathrm{OO}}^{\′}=(\mathrm{Dwe}+0.5G)\·\cos [0.5\×(Z-2)\·\arcsin \left(\frac{\mathrm{Dwe}}{\mathrm{De}-\mathrm{Dwe}}\right)]-\mathrm{Dwe}\·\cos \arcsin \left\{\right[\left(\frac{\mathrm{Dwe}+0.5G}{\mathrm{Dwe}}\right)\·\sin [0.5\×(Z-2)\·\arcsin \left(\frac{\mathrm{Dwe}}{\mathrm{De}-\mathrm{Dwe}}\right)]\}$ , described Dwe is the diameter of cylindrical roller, and described G is the circumference total backlash after cylindrical roller completely fills.

Described Z draws by such as under type: Z=π/arcsin [Dwe/ (De-0.5Gr)], wherein Gr is bearing end-play.

Described G draws by such as under type:

G＝(De-Dwe)×sin{(z-1)arcsin[Dwe/(De-Dwe)]}-Dwe。

Accompanying drawing illustrates:

Fig. 1 is the induction heating assembling schematic diagram of existing roller bearing.

Fig. 2 is the assembling schematic diagram of the full dress radially self-locking roller bearing of the utility model.

Fig. 3 is A-A sectional view of Fig. 2.

Embodiment:

The one of the utility model completely fills radially self-locking roller bearing, as shown in Figure 2 and Figure 3, at least comprise bearing outer ring 1 and some cylindrical rollers, the axial left and right both ends of the surface of described bearing outer ring 1 are respectively equipped with the annular rib 11 extended radially inwardly, the internal surface of bearing outer ring 1 forms ring raceway 12 between two annular ribs 11, the diameter D of the annular rib 11 of described bearing outer ring 1 ₂satisfy condition: OO ＇>=(De-D ₂)/2, wherein, described De is the diameter of the ring raceway 12 of described bearing outer ring 1, described OO ＇ is Z grain cylindrical roller 2Z is switched to the second state Shi Qi center outward radial displacement amount from the first state, under described first state, the outer surface of the outer surface of Z grain cylindrical roller 2Z and the adjacent the 1st cylindrical roller 21 and Z-1 grain cylindrical roller 2Z-1 is simultaneously tangent, and this Z grain cylindrical roller 2Z is positioned at the side near described annular rib 11, now, the center of this Z grain cylindrical roller 2Z is O, under described second state, the outer surface of this Z grain cylindrical roller 2Z and the internal surface of ring raceway 12 tangent, now, the center of this Z grain cylindrical roller 2Z is O ＇, described Z is the roller sum that cylindrical roller completely fills, described Z grain cylindrical roller completely fills radially self-locking in the ring raceway 12 of bearing outer ring.

Further, described OO ＇ draws by such as under type:

${\mathrm{OO}}^{\′}=(\mathrm{Dwe}+0.5G)\·\cos [0.5\×(Z-2)\·\arcsin \left(\frac{\mathrm{Dwe}}{\mathrm{De}-\mathrm{Dwe}}\right)]-\mathrm{Dwe}\·\cos \arcsin \left\{\right[\left(\frac{\mathrm{Dwe}+0.5G}{\mathrm{Dwe}}\right)\·\sin [0.5\×(Z-2)\·\arcsin \left(\frac{\mathrm{Dwe}}{\mathrm{De}-\mathrm{Dwe}}\right)]\}$ , described Dwe is the diameter of cylindrical roller, and described G is the circumference total backlash after cylindrical roller completely fills.

Again further, described Z draws by such as under type: Z=π/arcsin [Dwe/ (De-0.5Gr)], wherein Gr is bearing end-play, can look into choosing from GB/T4604-2006 " rolling bearing radial internal clearance ".

Further, described G draws by such as under type:

G＝(De-Dwe)×sin{(z-1)arcsin[Dwe/(De-Dwe)]}-Dwe。

The foregoing is only preferred embodiment of the present utility model, be not used for limiting the scope that the utility model is implemented, all equal changes of doing according to the utility model the scope of the claims and modification, all fall into the scope that the utility model patent contains.

Claims (4)

1. one kind completely fills radially self-locking roller bearing, at least comprise bearing outer ring and some cylindrical rollers, the axial left and right both ends of the surface of described bearing outer ring are respectively equipped with the annular rib extended radially inwardly, the internal surface of bearing outer ring forms ring raceway between two annular ribs, it is characterized in that: the diameter D of the annular rib of described bearing outer ring ₂satisfy condition: OO ＇>=(De-D ₂)/2, wherein, described De is the diameter of the ring raceway of described bearing outer ring, described OO ＇ is that Z grain cylindrical roller is switched to the outward radial displacement amount at the second state Shi Qi center from the first state, under described first state, the outer surface of the outer surface of Z grain cylindrical roller and the adjacent the 1st cylindrical roller and Z-1 grain cylindrical roller is simultaneously tangent, and this Z grain cylindrical roller is positioned at the side near described annular rib, now, the center of this Z grain cylindrical roller is O, under described second state, the outer surface of this Z grain cylindrical roller and the internal surface of ring raceway tangent, now, the center of this Z grain cylindrical roller is O ＇, described Z is the roller sum that cylindrical roller completely fills, described Z grain cylindrical roller completely fills radially self-locking in the ring raceway of bearing outer ring.

2. one completely fills radially self-locking roller bearing according to claim 1, it is characterized in that: described OO ＇ draws by such as under type:

${\mathrm{OO}}^{\′}=(\mathrm{Dwe}+0.5G)\·\cos [0.5\×(Z-2)\·\arcsin \left(\frac{\mathrm{Dwe}}{\mathrm{De}-\mathrm{Dwe}}\right)]-\mathrm{Dwe}\·\cos \arcsin \left\{\right[\left(\frac{\mathrm{Dwe}+0.5G}{\mathrm{Dwe}}\right)\·\sin [0.5\×(Z-2)\·\arcsin \left(\frac{\mathrm{Dwe}}{\mathrm{De}-\mathrm{Dwe}}\right)]\}$ , described Dwe is the diameter of cylindrical roller, and described G is the circumference total backlash after cylindrical roller completely fills.

3. one according to claim 1 and 2 completely fills radially self-locking roller bearing, it is characterized in that: described Z draws by such as under type: Z=π/arcsin [Dwe/ (De-0.5Gr)], wherein Gr is bearing end-play.

4. one according to claim 1 and 2 completely fills radially self-locking roller bearing, it is characterized in that: described G draws by such as under type:

G＝(De-Dwe)×sin{(z-1)arcsin[Dwe/(De-Dwe)]}-Dwe。